Fix the issue that the data is not displayed when the map is not loaded.

sean.zhou

2023-03-14 b09ed762edb698bb12b11beb28ee7c2de76ceecc

 src/utils/common.ts

@@ -1,4 +1,8 @@

/**
 * 下载文件
 * @param data
 * @param fileName
 */
export function downloadFile (data: Blob, fileName: string) {
  const lable = document.createElement('a')
  lable.href = window.URL.createObjectURL(data)